Characteristics of high pressure hoses
The appearance of high-pressure hoses is due to scientific and technological progress, forcing us to look for new technological solutions to meet the needs of production. These hoses are flexible rubber hoses, the design of which includes a metal braid and cap nuts at the ends.
Technical specifications
High—pressure hoses and their components must meet the requirements of two GOST standards - 6286-73 and 25452-90. Standard products work under the following conditions:
- withstanding pressure — up to 30 MPa;
- minimum temperature -50 degrees Celsius;
- the maximum temperature is +70 degrees Celsius.
Such conditions are maintained through the use of a special rubber compound.
ADVANTAGES
The main advantages of high pressure hoses in addition to the ability to withstand loads are:
- fire resistance;
- mechanical strength;
- tightness;
- the possibility of protection against friction and shock thanks to the braid;
- ability to absorb vibration and act as a compensator;
- variety of varieties;
- ability to work with different environments.
The disadvantages include the inability to install fittings directly on the sleeve, for example, a straight shut-off valve or gate valves.
Areas of application and varieties
High-pressure hoses are used everywhere. They serve as an integral part of hydraulic units, machines and heavy machinery using or transporting fuel, oils, liquids — tractors, excavators, bulldozers, industrial machines, etc. Hoses are also used for gases and bulk substances.
The most common type is non—reinforced pressure hoses. They are divided into classes:
- P — for food and drinking water;
- G — for non-flammable gases;
- B — for industrial water;
- KSH — for acids, alkalis and chemically aggressive substances.
For ultra-high loads, durite hoses are used that can withstand temperatures in the range -60–+100 degrees, or products with a metal braid that can withstand up to 190 degrees Celsius. These hoses can transport molten bitumen and other substances.
By selecting hoses with the right characteristics, it is possible to equip any industry with a flexible and reliable pipeline.